Brick pressing machine



-5 SheetsSheet 1..

J. s. PULL-AN, W. H. MANN & J. GILL;

BRIGK PRESSING MACHINE.

te nted Feb. 13, 1894.

EM Ma lrllllll ms NATIONAL Ll'mceRAPmNa COMPANY.

WASHINGTON. w. c.

. 5 Sheets-Sheet 2.. J. S. PULLAN, W. H. MANN & J. GILL;

(No Model.)

BRIOKPRESSING MACHINE. I I N0. 514,772. Patented Feb. 13, 1894.

. hfl l l l l nn I l l I ldl h v. m lflHr v V M m II a A n wq u n m J NLIQII- I I 9 n n m 1 Am 1 n r Ill .4 t): .31.:2 m l r v (Il F A F 1lifLii 7 u-+ humr||||| FIG. 2.

(No Model.) I 5 Sheets-Sheet 4. I

J. S. PULL W. H. MANN & J. GILL.

PRESSI-NG MACHINE.

AN, BRIGK No. 514,772. Patented Feb. 13, 1894.

FIG. 6.

(No Model.)

I 5-- SheetsSheet 5. J. S. PULLAN- W. H. MANN 8v J. GILL.

BRICK PRESSING MACHINE.

Patented Feb. 13, 1894."

FIGS.

ccMPANY.

UNITED STATES- PATENT rri cf.

JOHN SAMUEL PULLAN, WILLIAM HUTOHINSON MANN, AND JOHN GILL, OF

LEEDS, ENGLAND.

BRICK-PRESSING MACHINE.

SPECIFICATION forming part of Letters Patent No. 514,772, dated February13, 1894. Application filed July 9,1892. Serial No. 439,519. (No model.)Patented in England July 28,1891, No. 12,760-

. land, have invented new and useful Improvements in Brick-PressingMachines, of which the following is a specification, and for which wehave obtaineda patent in Great Britain, No. 12,760, dated Ju1y28, 1891.

This invention relates to improvements in brick-pressing machines, andhas for its object to provide an automatic stop motionwhereby, after thebrick is pressed and the plunger elevated, the machine automaticallystops to permit the removal of the brick which has been pressed and theinsertion of a brick to be pressed.

Our invention also has for its object the provision of novel means forsecuring'uniform thickness of the bricks operated upon.

To these ends said invention consists in the novel construction andcombination of parts hereinafter described and claimed, reference beingmade to the accompanying drawings, in which- Figure l, is a sideelevation of a hand brickmachine constructed in accordance with ourinvention, and Fig. 2, is a front elevation thereof. Fig. 3, is anenlarged detail of the spring top-plate within the plunger, for securinga uniform thickness of the bricks operated upon. Fig. 4, is a detailview, illustrating the rubber-cushioned bottom-plate. .Fig. 5, is anelevation, enlarged, illustrating one end of the clutch-lever and theclutch-wheel. Fig. 6, is a plan view of the parts shown in Fig. 5. Fig.7, is a detail plan view showing the other end of the clutch-lever andthe means which operate the same. Fig. 8, is an elevation showing thespring top-plate and mechanism locking the same. Fig. 9, is a similarview, the parts being in different relative positions. V

In the said drawings the reference-letter A, designates the frame of themachine, and B, the rising and falling plunger. Secured to said plunger,at one side, as illustrated in Fig. 2, of the drawings, is a catch orprojection O, which rises and falls with the plunger. The catch 0, isarranged to come in contact with the machine begins its operation.

the handle D, of a clutch-lever E, pivoted to the frame A, as shown inFig. 1, whereby when the plunger rises, the clutch-lever is movedautomatically to operate the clutch, and stop the operation of themachine at the limit of the stroke of the plunger. The handle D, of theclutch-lever E, is jointed at D, so that when desired it can be turnedoutward so as not to come in contact with the catch or projection O, asshown in dotted lines in Fig. 7. A spring F, secured to a stationarypart of the lever, operates to return the handle D to its normal,operative position.

The reference-letter H, represents a clutch boss keyed to and rotatingwith the driving shaft and through which passes a pin G, which isnormally held in engagement with a recess N formed in the fly ordriving-wheel N, which is loose upon the driving-shaft, by means ofspiral springs M, M, seated in recesses in the clutch-boss H, andsecured to said pin. The pin G, is provided with aprojecting angular orbeveled head J, which lies in a groove K, formed in the periphery of theboss H. When the pin G, is in engagement with the recess N in the fly ordriving-wheel N, the machine is in gear for operation. The rear end of.the clutch-lever E, is provided witha projecting, angular or beveledhead L, the counterpart of the projecting head J, of the pin G.

The operation of the parts hereinbefore described, is as follows:Tostart the machine, the handle of the clutch-lever is pulled or moveddownward, lifting the angular head L, clear of the angular head J. Thepin G, is then drawn into the recess N in the drive wheel N, by means ofthe springs M, M, and When the plunger B has completed its down strokeand is returning or rising, the catch 0, secured thereto, engages andelevates the handle D, of the clutch-lever E, thus throwing the otherend into the groove K of the boss H, where its angular head L, comes incontact with the angular head J, of the pin G, and draws said pin out ofthe recess N of the flyor drivingwheel N, whereby the operation ofthemachine isautomatically stopped.

In order that a uniform thickness of the bricks may be secured and toprevent undue pressure upon the center of the brick, the following meansare employed: In the plunger B, upon a stud or spindle P is arranged amovable plate P, for forming the top recess or panel in the bricks,which plate is normally pressed outward by means of powerful springs R,R, located within the plunger and bearing against the movable plate. P,represents a skeleton presser-plate surrounding the movable plate P.Arranged to move in a recess V, in the plunger 13, is a cotter U, whichengages a recess P in the stud or spindle P so as to lock the movableplate P in proper position with relation to the skeleton plate P, whenthe plunger B, rises after pressing a brick, as hereinafter described.When the plunger B, is descending upon the brick to be pressed, themovable plate P, is pressed outward to its limit by the springs R, R, asshown in Fig. 8, and when the plunger has descended fully upon the bricksaid movable plate is forced inward against theaction of the springs, asillustrated in Fig. 9. In this retracted position it is locked by meansof the cotter U, which is drawn forward by the spring U. By thus lockingthe plate P in its retracted position, undue pressure on the center ofthe brick is avoided when the plunger 13 moves upward, which obviouslywould otherwise occur and cause the margins of the brick to swell up andcrack. After the plunger has ascended clear of the brick, the plate I,is released from its retracted position by means of an inclined surfaceS, formed upon a bracket S, secured to the frame of the machine, whichincline S, engages an incline formed upon the cotter U, and draws saidcotter backward, allowing the plate P, to be moved or projected outwardto the position shown in Fig. 7 by the springs R, R. W, represents anindia-rubber cushion arranged on the table W (between it and the mold Wand the bottom-press plate W). The rubber cushion W is protected fromoil by a metallic shield or cover X, which at the point Y, forms a stop,and after the rubber cushion is 00H]- pressed to that point and thebrick faced up, the top plunger still descends and measures thethickness of the brick. The pressure from the whole surface of the brickis removed simultaneously. The rubber'cushion gives a better face to thebrick and lessons the shock of the plunger.

It will be understood that the spring-pressed 1. In a brick press thecombination with a driving wheel and a clutch-boss, of a pin connectedwith said boss, said pin adapted to enter a recess in said driving-wheeland provided with a head, and clutch-lever havinga head adapted toengage the head on the pin,

substantially as described.

2. In a brick-press, the combination with a driving-wheel andaclutch-boss, of a pin connected with said boss, said pin adapted toenter a recess in said driving-wheel, and provided with a head,aclutch-lever having a head adapted to engage the head on the pin, and aplunger provided with a catch adapted to engage the handle of theclutch-lever, substantially as described.

3. The combination of the clutch, clutchlever E and plunger B carryingthe catch 0, substantially as described.

4. In a brickpress, the combination with a cross-head and a catchthereon, a drivingwheel provided with a recess, a clutch boss, a springactuated pin connected with said clutch-boss and provided with anangular head and a clutch-lever provided with an angular head,substantially as described.

5. In a brick-press, the combination of an india rubber cushion W,shield X and stop Y, between the table W and the mold W substantially asand for the purposes shown and described.

6. In a brick-press, the combination with a plunger and a movable platesecured thereto, of a spring-actuated cotter engaging a part of saidmovable plate to lock it in aretracted position, and a bracket having aninclined surface engaging an incline formed on the cotter for releasingthe movable plate from its locked position, substantially as described.

In testimony whereof we hereunto afiix our signatures in the presence oftwo witnesses.

JOHN SAMUEL PULLAN. \VILLIAM HUTCI-IINSON MANN. JOHN GILL.

Witnesses:

HERBERT DUNN, F. W. IIAINES,

Both of Royal Exchange, Leeds.

